			 var login = document.getElementById("login");
            var mask = document.getElementById("mask");
            var box = document.getElementById("box");
            login.onclick = function(){
                mask.style.display = "block";
                box.style.display = "block";
            }
            var close_all = document.getElementById("close_all");
            close_all.onclick = function(){
               mask.style.display = "none";
               box.style.display = "none";
           }
            var close_all = document.getElementById("up_all");
            close_all.onclick = function(){
               mask.style.display = "none";
               box.style.display = "none";
           }